연립일차방정식

Geraldine has been offered positions by two insurance companies. The first company pays a salary of $12,000 plus a commission of $100 for each policy sold. The second pays a salary of $20,000 plus a commission of $50 for each policy sold. How many policies would need to be sold to make the total pay the same?

Kenneth currently sells suits for company A at a salary of $22,000 plus a $10 commission for each suit sold. Company B offers him a position with a salary of $28,000 plus a $4 commission for each suit sold. How many suits would Kenneth need to sell for the options to be equal?

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}2x+y=-4 \\ 3x-2y=-6\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}2x+y=-2 \\ 3x-y=7\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}x-2y=-5 \\ 2x-3y=-4\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}x-3y=-9 \\ 2x+5y=4\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}5x-2y=-6 \\ y=3x+3\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}-2x+2y=6 \\ y=-3x+1\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}2x+3y=3 \\ y=-x+3\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}2x+5y=-14 \\ y=-2x+2\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}2x+5y=1 \\ y=\frac{1}{3}x-2\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}3x+4y=1 \\ y=-\frac{2}{5}x+2\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}3x-2y=6 \\ y=\frac{2}{3}x+2\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}-3x-5y=3 \\ y=\frac{1}{2}x-5\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}2x+y=10 \\ -x+y=-5\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}-2x+y=10 \\ -x+2y=16\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}3x+y=1 \\ -4x+y=15\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}x+y=0 \\ 2x+3y=-4\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}x+3y=1 \\ 3x+5y=-5\end{array}\right.$

Solve a System of Equations by Substitution

In the following exercises, solve the systems of equations by substitution.

$\left\{\begin{array}{l}x+2y=-1 \\ 2x+3y=1\end{array}\right.$